diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/language/settings/providers/LanguageSettingsProvidersSerializer.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/language/settings/providers/LanguageSettingsProvidersSerializer.java
index cbb1001c69f..87a0b8bee7f 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/language/settings/providers/LanguageSettingsProvidersSerializer.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/language/settings/providers/LanguageSettingsProvidersSerializer.java
@@ -47,6 +47,7 @@ import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResource;
+import org.eclipse.core.resources.IWorkspace;
 import org.eclipse.core.resources.IWorkspaceRoot;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.resources.WorkspaceJob;
@@ -879,6 +880,7 @@ public class LanguageSettingsProvidersSerializer {
 						fileStorePrj.delete(true, null);
 					}
 				} else {
+					project.getWorkspace().validateEdit(new IFile[] { fileStorePrj }, IWorkspace.VALIDATE_PROMPT);
 					IContainer folder = fileStorePrj.getParent();
 					if (folder instanceof IFolder && !folder.exists()) {
 						((IFolder) folder).create(true, true, null);